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where can I get the criterion of code writing ?

   I want a criterion of VB code writing to standard my VB code and make it more effective. Can someone tell me how to get that?
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Éric MoreauSenior .Net ConsultantCommented:
1. Never use Variant/Object datatypes when you can use a native datatype.
Are you looking for a programming standard to follow?

Programming is not like assembly line building.  It is more of an artform with a very scientific result.

Generally, programmers have found that certain things work better than others, but many of these tactics are merely styles that vary by language.

For example, VB programmers often prefix their variables with a three-letter code to indicate the type of data held in the variable.  Many use all capital letters for CONSTANTS.

Those are the easy parts.  The actually coding itself is so unique that is you asked 10 programmers to write a simple loop to perform some calculation, you'd likely get 10 different and equally correct answers.

All that said, here are some tips:

* When writing code, write it with self-documenting variable names such as strName (a string variable that will hold a name) and intLetterCntr (an integer variable used for counting letters.)

* Create modules that are less than 50 lines of code.  Bigger than that, you should probably break it up into subroutines or functions

* Place all variables references for a given module at the top of that module.  Don't make them anything other than local unless you absolutely must have that variable's *information* used elsewhere.  A common mistake is to make a variable global because a certain functin is used over and over.  For example, don't make intCntr global; rather make multiple local copies as you need them.

* Anything that will be used many times should be placed into a separate subroutine or function.

* Any numeric or string constants that are not immediately obviously should be made into constants so they are self-documenting, such as Const PI = 3.14159.  This will ensure that your constants are used for their intended purpose and that other developers can easily understand and fix as needed (such as if more precision is needed or if the value was mistakenly entered as 3.14169.

* Subroutines should usually be private within a form module.  If there is a need to make it public, move it to a standard or class module.

You know, I could write an entire book on this stuff!
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